SOLUTION: Stan and Hilda can mow the lawn in 30 min if they work together. If Hilda works twice as fast as Stan, how long would it take Stan to mow the lawn alone?

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Question 280728: Stan and Hilda can mow the lawn in 30 min if they work together. If Hilda works twice as fast as Stan, how long would it take Stan to mow the lawn alone?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.5/h+.5/s=1
2h=s
s=1.5 hours and h=.75 hours
stan would take 1 hour 30 minutes alone